<% insert_menu(0); %>
<% title_block("the sun", "sunrise/sunset | aurora | the moon | the planets"); %>
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| Note: Due to cloud cover, equipment
problems, or various other issues, one or more of the images below may be out of date or
unavailable. If any of the images say "CCD BAKEOUT," check
here for
an explanation. Each image is updated based on the schedule of each
observatory - most are updated several times per day. |
|
Mees White Light Telescope (MWLT), Mees Solar Observatory, Haleakala, Hawaii
depicts the sun as viewed by the naked eye (with the proper protective filters in place!)
click on image for a larger view
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Michelson Doppler Imager, ESA/NASA Solar & Heliospheric Observatory Spacecraft (SOHO)
depicts movements of magnetically sensitive ionized nickel atoms - closely simulates the white-light view
click on image for a larger view
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Mees Solar Observatory, Haleakala,
Hawaii; NOAA;
USAF
click on thumbnail to view the full-size map
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Polarimeter for Inner Coronal Studies (PICS), Mauna Loa Solar Observatory, Hawaii
depicts emissions from hydrogen atoms at about 10,000 °K
click on image for a larger view
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Chromospheric Helium I Imaging Photometer (CHIP), Mauna Loa Solar Observatory, Hawaii
depicts emissions from helium atoms - active regions appear dark in this view
click on image for a larger view
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Extreme Ultraviolet Imaging Telescope (EIT), ESA/NASA Solar & Heliospheric Observatory Spacecraft (SOHO)
depicts emissions from ionized helium atoms at about 60,000 - 80,000 °K
click on image for a larger view
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Extreme Ultraviolet Imaging Telescope (EIT), ESA/NASA Solar & Heliospheric Observatory Spacecraft (SOHO)
depicts emissions from iron atoms ionized 8 or 9 times at about 1 million °K
click on image for a larger view
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Kitt Peak Vacuum Telescope, National Solar Observatory, Kitt Peak, Arizona
depicts the solar magnetic field - dark areas are regions of south magnetic polarity
(moving toward the center of the sun) and the white regions are north polarity (moving toward us)
click on image for a larger view
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Polarimeter for Inner Coronal Studies (PICS), Mauna Loa Solar Observatory, Hawaii
depicts emissions from hydrogen atoms at about 10,000 °K in the corona - the
sun itself is masked by an opaque disk in the telescope
click on image for a larger view
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Mark-IV K-Coronameter, Mauna Loa Solar Observatory, Hawaii
depicts solar photons scattered by free electons in the sun's outer
atmosphere - the solar disk is masked by an opaque disk in the telescope
click on image for a larger view
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Large Angle Spectrometric Coronagraph (LASCO), ESA/NASA Solar & Heliospheric Observatory Spacecraft (SOHO)
depicts the outer solar corona to a distance of 24 million km (15 million miles) - the solar
disk (white circle) is masked by an opaque disk in the telescope
background stars, planets, and sometimes comets can be seen in this image
click on image for a larger view
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| Ecliptic Longitude: |
<% Response.write(degtodmsstr(sundata_current[0])); %>
|
Right Ascension:
Declination:
|
<%
Response.write(degtohmsstr(sunradec_current[0]) + "
");
Response.write(degtodmsstr(sunradec_current[1]));
%>
|
|
Sunrise:
Azimuth: |
<%
if (srs[0] == 99)
Response.write("
Does not set");
else if (srs[0] == -99)
Response.write("
Does not rise");
else
{
trise = hourstohms(normalize24(lsttogmt(local_date.getUTCFullYear(), local_date.getUTCMonth() + 1,
local_date.getUTCDate(), Number(Request.Cookies("UserData")("Longitude")), srs[0]) + Number(Request.Cookies("UserData")("Timezone"))));
trise_gmt = hourstohms(normalize24(lsttogmt(local_date.getUTCFullYear(), local_date.getUTCMonth() + 1,
local_date.getUTCDate(), Number(Request.Cookies("UserData")("Longitude")), srs[0])));
trise12hr = to12(trise[0]);
Response.write(trise12hr[0] + ":" + leadingzero(trise[1]) + ":" + leadingzero(trunc(trise[2])) + " " + trise12hr[1] + " Local
");
Response.write(trise_gmt[0] + ":" + leadingzero(trise_gmt[1]) + ":" + leadingzero(trunc(trise_gmt[2])) + " UTC
");
Response.write(degtodmsstr(srs[1]));
}
%>
|
Sunset:
Azimuth: |
<%
if (srs[0] == 99)
Response.write("
Does not set");
else if (srs[0] == -99)
Response.write("
Does not rise");
else
{
tset = hourstohms(normalize24(lsttogmt(local_date.getUTCFullYear(), local_date.getUTCMonth() + 1,
local_date.getUTCDate(), Number(Request.Cookies("UserData")("Longitude")), srs[2]) + Number(Request.Cookies("UserData")("Timezone"))));
tset_gmt = hourstohms(normalize24(lsttogmt(local_date.getUTCFullYear(), local_date.getUTCMonth() + 1,
local_date.getUTCDate(), Number(Request.Cookies("UserData")("Longitude")), srs[2])));
tset12hr = to12(tset[0]);
Response.write(tset12hr[0] + ":" + leadingzero(tset[1]) + ":" + leadingzero(trunc(tset[2])) + " " + tset12hr[1] + " Local
");
Response.write(tset_gmt[0] + ":" + leadingzero(tset_gmt[1]) + ":" + leadingzero(trunc(tset_gmt[2])) + " UTC
");
Response.write(degtodmsstr(srs[3]));
}
%>
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<%
Response.write(comma(round(sundata_current[1] * 149597870.691, 2)) + " km
");
Response.write(comma(round(sundata_current[1] * 92955628.85, 2)) + " mi
");
Response.write(round(sundata_current[1], 8) + " au");
%>
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Light Travel Time:
Angular Size: |
<%
lighttime = hourstohms((sundata_current[1] * 499) / 3600);
Response.write(lighttime[1] + "m " + round(lighttime[2], 1) + "s
");
size = degtodms(sundata_current[1] * 0.533128);
Response.write(size[1] + "' " + round(size[2], 1) + """);
%>
|
|
| Mass: |
1.989 x 1030 kg
4.385 x 1030 lb |
Temperature:
Spectral Class: |
5800°K (photosphere)
15,600,000°K (core)
3,000,000°K (corona)
G2 |
| Diameter: |
1,390,000 km
861,800 mi |
| Rotational Period: |
25.4 days (equator)
35.7 days (poles) |
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<% insert_footer(); %>
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